fun and learning with electronics since 2010
You can send data from one Arduino to another, or create a wireless remote-control system using inexpensive long-range 315MHz or 433MHz wireless data units. Using this tutorial so you can quickly test and use your units, giving you the knowledge to build upon and make your own projects. So let’s get started! Testing the modules […]
The goal of this project is to make a pair of traffic lights that can be used for learning about Arduino digital inputs and outputs – or as the prototype for your own traffic lights in model layouts such as trains, dioramas, LEGO and so on. Imagine a two-way road that has a single-lane bridge […]
Now and again you may find yourself needing to use more than one device with the same I2C bus address with your Arduino. Such as four OLEDs for a large display – or seven temperature sensors that are wired across a chicken hatchling coop. These types of problems can be solved with the TCA9548A 1-to-8 I2C Multiplexer […]
In this article we examine a five digit, seven-segment LED display from Hewlett-Packard, the 5082-7415: We realise they’re most likely now pure unobtanium, but we like some old display p0rn so here you go. 2025 update – Tronixlabs in Australia has a limited quantity of new, old-stock four-digit QDSP6064 displays. Email john at tronixlabs dot com […]
In this post I would like to share a series of interviews conducted by Dave Jones from eevblog.com. Dave interviews Colin Mitchell from Talking Electronics. Throughout the 1980s and onwards, Colin published a range of electronics magazines, tutorials and a plethora of electronics kits – of which many are still available today. Tens of thousands of Australians […]
This is the first of two tutorials that will examine the LM391x series of LED driver ICs. In this first tutorial we cover the LM3914, and the second covers the LM3915. The goal of these tutorials is to have you using the parts in a small amount of time and experiment with your driver ICs, […]
In this chapter we will introduce and examine the use of Ethernet networking with Arduino over local networks and the greater Internet. It will be assumed that you have a basic understanding of computer networking, such as the knowledge of how to connect computers to a hub/router with RJ45 cables, what an IP and MAC address is, […]
Introduction This is the second of two articles that will examine the LM391x series of LED driver ICs. The first covered the LM3914, and this covers the LM3915. The goal of these is to have you using the parts in a small amount of time and experiment with your driver ICs, from which point you […]
Learn how to measure smaller voltages with greater accuracy using your Arduino. In this tutorial we’ll look at how you can measure smaller voltages with greater accuracy using the analogue input pins on your Arduino Uno R1 to R3 (not R4!) or compatible board in conjunction with the AREF pin. However first we’ll do some […]
Numeric keypads can provide a simple end-user alternative for various interfaces for your projects. Or if you need a lot of buttons, they can save you a lot of time with regards to construction. We’ll run through connecting them, using the Arduino library and then finish with a useful example sketch. Getting Started No matter […]